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| Subject | English | Portuguese |
| health. | novel influenza A H1N1 | gripe AH1N1 |
| health. | novel influenza A H1N1 | gripe humana de origem suína |
| health. | novel influenza A H1N1 | gripe mexicana |
| health. | novel influenza A H1N1 | gripe norte-americana |
| med. | novel influenza virus A H1N1 | novo vírus da gripe AH1N1 |
| med. | novel influenza virus A H1N1 | novo vírus da gripe |